Radian Weapons R0898 Model 1 Complete Upper 6mm ARC 14.5" M-LOK Black Nitride

The Radian Weapons R0898 Model 1 complete upper brings Radian's renowned precision machining and premium component selection to the 6mm ARC AR-15 platform. This drop-in upper assembly is purpose-built for shooters who demand match-grade accuracy, long-range ballistic efficiency, and the refined fit and finish that define the Model 1 line.

At the core is a 14.5" steel barrel finished in black nitride for excellent wear resistance, lubricity, and corrosion protection. The barrel is pinned to achieve a 16" overall length, keeping the build NFA-compliant while preserving the compact handling characteristics of the shorter barrel profile. The 6mm ARC cartridge was developed to deliver long-range performance from a standard AR-15 magazine, and this upper is optimized to take full advantage of that capability.

An M-LOK handguard surrounds the barrel, providing a rigid mounting platform and flexible accessory attachment along the full length of the forend. Designed to mate with any standard AR-15 lower receiver, this complete upper offers builders a straightforward path to a premium 6mm ARC rifle backed by Radian's signature build quality.